Multifunctional sewage treatment coagulant

Abstract

The invention discloses a multifunctional sewage treatment coagulant. The multifunctional sewage treatment coagulant comprises the following components in parts by weight: 17-25 parts of zeolite, 3-11 parts of quick lime, 7-15 parts of coal ash, 30-45 parts of calcium sulfate, 30-45 parts of ferrous sulfate, and 2-7 parts of poly dimethyl diallyl ammonium chloride. When the product is used to physicochemically treat sewage, the produced floc is large and is dense in structure, the separation of mud and water is easy, the treatment effect of the main pollution indicators of the sewage is obviously improved, and the compound coagulant with relatively high cost performance has better settling separation and adsorption effects when mainly being used to treat sewage in the leather factory and separate mud and water in channel cleanout.

Description

technical field [0001] The invention belongs to the technical field of wastewater, sewage or sludge treatment, in particular to a multifunctional sewage treatment coagulant. Background technique [0002] In addition to silt and fine-grained dust, natural water bodies or industrial water bodies also contain microorganisms such as humus, starch, cellulose, bacteria, and algae. These impurities and water form colloidal particles in a sol state, which exhibit sedimentation stability and polymerization stability due to Brownian motion and electrostatic repulsion. Usually, they cannot be removed by natural sedimentation by gravity. A coagulant must be added to destroy the stability of the sol. The fine colloidal particles are coagulated and then flocculated into larger particles and precipitated. Coagulants are divided into inorganic and organic, whether organic or inorganic, are used to treat suspended solids in sewage treatment, reduce or adjust water quality indicators (such a...

AI Technical Summary

Problems solved by technology

However, because some sewage contains heavy metals or certain toxic substances, some of them are contained in colloidal particles. Although they are flocculated by adding traditional coagulants, they cannot be fully separated from water-soluble substances, especially those specified in the national standard. Excessive heavy metals and other issues

In addition, because the traditional coagulant itself does not have the functions of capturing heavy metals and adsorbing toxic substances, the flocculated flocs are simply separated from mud and water and then buried everywhere, which also pollutes the soil.

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